what is the mean number of days per month among all months in the year 2018?
[(4 * 30) + (8 * 31)] / 12 = ?
What about February?
365/12 = ?
oops!
To find the mean number of days per month among all months in the year 2018, we need to calculate the total number of days in all twelve months and then divide it by twelve.
Here's how you can do it:
1. Determine the number of days in each month of the year 2018:
- January: 31 days
- February: 28 days (or 29 days in a leap year)
- March: 31 days
- April: 30 days
- May: 31 days
- June: 30 days
- July: 31 days
- August: 31 days
- September: 30 days
- October: 31 days
- November: 30 days
- December: 31 days
2. Add up the total number of days:
Total = 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31
3. Divide the total by twelve to get the mean:
Mean = Total / 12
Calculating this, we get:
Total = 365
Mean = 365 / 12
Therefore, the mean number of days per month among all months in the year 2018 is approximately 30.42 days.